大约有 3,556 项符合查询结果(耗时:0.0161秒) [XML]

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How to check if a database exists in SQL Server?

What is the ideal way to check if a database exists on a SQL Server using TSQL? It seems multiple approaches to implement this. ...
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MySQL “WITH” clause

I'm trying to use MySQL to create a view with the "WITH" clause 8 Answers 8 ...
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Check if table exists and if it doesn't exist, create it in SQL Server 2008

I am writing a Stored procedure in SQL Server 2008. I need to check if a table exists in the database. If it doesn't then I need to create it. ...
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How to create a backup of a single table in a postgres database?

... psql -U username -d database -1 -f your_dump.sql – rnaud Feb 3 '17 at 19:38 5 ...
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How to set variable from a SQL query?

I'm trying to set a variable from a SQL query: 9 Answers 9 ...
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List all sequences in a Postgres db 8.1 with SQL

I'm converting a db from postgres to mysql. 19 Answers 19 ...
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Check if a temporary table exists and delete if it exists before creating a temporary table

...aps I'm not understanding the problem. The following works fine for me in SQL Server 2005, with the extra "foo" column appearing in the second select result: IF OBJECT_ID('tempdb..#Results') IS NOT NULL DROP TABLE #Results GO CREATE TABLE #Results ( Company CHAR(3), StepId TINYINT, FieldId TINYINT...
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Best practices for SQL varchar column length [closed]

Every time is set up a new SQL table or add a new varchar column to an existing table, I am wondering one thing: what is the best value for the length . ...
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Real escape string and PDO [duplicate]

I'm using PDO after migrating away from the mysql library. What do I use in place of the old real_escape_string function? ...
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SQL error “ORA-01722: invalid number”

...ou have to make it a String yourself, marking the value explicitly in your SQL expression, to surround it by ' ' OR " ". – Franta Jun 25 at 15:00 add a comment ...